The Samsung SCH-R970 model is the Galaxy S4 for U.S. Cellular mobile carrier in USA, It has the same features like other US Galaxy S4 variants, And in this guide we are going to show you how you can use simple and free tools to update the Android version of your R970 GS4 smartphone, The update process will be done manually which is very useful when you can not update your device over the air (OTA update) for any reason.